Reliability, validity and psychometric properties of the Greek translation of the Major Depression Inventory

BMC Psychiatry

Table 5 ANOVA results.

	Sums of Squares	Percent of Total variance	Df	Mean Square
subjects	2069.09	10.67	17	121.71
MDI items	11275.05	58.13	12	939.59
Test vs. retest (trials)	1.68	*0.01*	1	1.68
subjects by items	5631.18	29.03	204	27.60
subjects by trials	103.86	*0.54*	17	6.11
items by trials	8.38	*0.04*	12	0.70
subjects by items by trials	307.08	*1.58*	204	1.51
Total	19396.32	100.00	467	41.53

They suggest that only 0.01% of total variance is due to differences inherent to the test-retest procedure, with an additional 2.16% (0.54+0.04+1.58) attributable to the interaction of this procedure with subjects and the test itself. This is obviously a very low rate.

ISSN: 1471-244X